Filling contrivance for charging lorries of coke ovens



Ap 15, 1941- B. NELLEKE 2,238,200

FILLING CONTRIVANCE FOR CHARGING LORRIES OF COKE OVENS Filed June 28, 1939 3 Sheets-Sheet 1 Fig.1

B. WILLEKE April 15, 1941.

FILLING CONTRIVANCE FOR CHARGING LORRIES 0F COKE OVENS Filed June 28, 1959 3 Sheets-Sheet 2 5. WILLEKE April 15, 1941.

FILLING CONTRIVANCE FOR CHARGING LORRIES OF COKE OVENS Filed Jum a 28, 1939 3 Sheets-Sheet 5 Patented Apr. 15, 1941 UNITED STATES Bruno Willeke, Gladbeck mesne assignments,

, Germany, assignor, by to Koppers Company,

Pittsburgh, Pa., a corporation of Delaware Application June 28, 1939, Serial No. 281,623 In Germany June 29, 1938 3 Claims. (01. 214--42) The present invention relates to apparatus for filling the coal charging cars for horizontal chamher or retort ovens for the production of gas and coke and more particularly to such filling apparatus in which the coal to be treated is delivered into the lorry 'car hoppers from a bottom opening in a storage bunker arranged above the trackway for the coal charging car on the roof of the coke oven battery.

Themain object of my present invention is to provide such improvements in the filling apparatus that a uniform filling of the lorry hoppers With the coal may he arrived at and yet the coal is Withdrawn from the coal bin over the whole area thereof in'a practically equal manner.

The coke oven coal bin as known is usually fitted with one or several bottom openings controlled by slides or other suitable shut-ofi'.means. The coal discharges through said openings into the coal charging carin rather an irregular flow. The coal to be coked must be filled into the coking chamber at a definite density as uniformly as possible and furthermore in a quantity remaining always the same, for if too much compressed, a

dangerous swelling of the coal may take place 7 during the carbonization endangering the chamber walls, and an insufiicient quantity of coal afiects the eificiency of the coke oven.

I have found that the irregularities in delivering the coal from the storage bunker into the coal charging car, have a considerable effect on the coal charged into the coking chamber, certain layers of the hopper have a greater density than other ones due to a great quantity of coal suddenly discharging from the service bunker. Layers of coal compressed in such a manner re- III main unchanged causing difficulties in operation of the lorry car and also in the formation of coke 'of high quality.

Now, according to my invention, the bottom of the service bunker is provided with one or several discharge slots extending substantially in the direction of travel of the lorry car. A pref- .erably horizontal support or wall is arranged underneath each discharge slot 'insuch amanner that the coal accumulates on said support and is stripped by a scraper or the like controlled bythe charging lorry into the lorry hopper when latter moves: underneath the support.

According to my invention the filling of the lorry from the service bunker takes place by driving the lorry car underneath the support below the discharge slot whereupon the scraper is set into operation so that the coal is stripped off the support at a uniform flow into the car hopper, the charging car itself being moved for wards and backwards underneath the support.

Separate scrapers are preferably used for the forward and backward movements and by suitably dimensioning the supporting wall especially as regards its length and width and the scraper it is possible to fill the charging lorry at a single forward and backward movement with a completely uniform fiow.

No special closures at the outlet of the storage bunker need be manipulated as the filling starts automatically when the lorry is driven underneath the service bunker. Stirring the coal in the service bunker by hand is unnecessary since the discharge slot may be kept wide enough so that ocal of any kind (as regards the size and water content) easily slides upon the supporting body.

According to a further feature of my present invention, the scrapers are coupled with the lorry car as soon as the latter is driven underneath the coal service bunker so that the scraper will follow automatically the movement of the lorry car eliminating special driving means for the scraper.

Further objects and features of my present invention may be taken from the following description of a preferred embodiment thereof on the lines of the accompanying drawings in which:

Fig, 1 is a vertical cross section through a part of a filling apparatus constructed according to my invention together with the charging car arranged underneath in filling position;

Fig. 2 is a vertical longitudinal section on line IIII of Fig. 1; r

Fig. 3 shows the upper part of the coal charging car on an enlarged scale, before travelling into the filling position; i i

Fig; 4 is a horizontal longitudinal section through the lower part of the coal bunker on line ZW--IV-of Fig. 1.

Fig. 5 is an elevational view of another form of scraper positioner. Fig. 6 is a top plan view of the structure of Fig. 5.

On the drawings the coal bunker l is arranged preferably at the end of the coke oven battery (not shown on the drawings). The drawings show only the lower part of said bunker. The interior of the bunker is divided by a peak: like partition in such a manner that two slot-like openings la are formed which extend over the whole length of the bunker. Beneath each of the slot like openings la there is arranged a horizontal wall 4. Between the roof like partition 6 and the horizontal wall 4 are further slot like openings I provided for which extend like the openings Ia over the whole length of the coal bunker.

As shown in Fig. 1 of the drawings, the coal filled into the bunker I is supported by the horizontal wall 4 and will accumulate thereon at a certain angle and the angle of partition 6 is such that the coal cannot discharge freely through the slot-like openings I from the supporting bottom 4. Between the supporting bottoms 4 there is provided a further slot-like opening 5 through which the coal moved off the upper surface of the bottom 4 may fall downwards.

Upon the number of charging holes arranged in the oven roof of the coking chambers depends the number of the adjacently lying coal hoppers 3 on the charging lorry. The storage bunker is provided with a bunker outlet having a slot opening 5 and associated parts for each of these hoppers. per 3 together with the corresponding outlet therefor from bunker I and associated mechanism is shown on the drawings.

Channel irons '8 are fastened at both sides of the slot-like opening 5 outside the bunker at the bottom of same, the travelling wheels 9 of a bogie I running in said channel irons.

In the middle of the bogie I2 is arranged a cross girder I I on which are supported the scrapers I2, I3 which may be turned by the pivots I4. The scrapers I2, I3 are rigidly interconnected in pairs on each side. The arms I6 which are rigidly connected with the scrapers I2, I3 and provided with longitudinal slots I5 are likewise fastened to the pivots I I. The arms I6 cross each other as shown in Fig. 3. The centre of the bogie I0 is traversed by a rod I"! which may be moved in longitudinal direction relative thereto and which is guided in the transverse yokes I8 of the bogie III.

The rod I1 is equipped with a pivot I9 which engages into the longitudinal slots I5 of the crossing arms I6 of the scrapers I2, I3. By the longitudinal movement of the rod II, the arms I5 and I6 as well as the scrapers I2, I3 may be slewed in such a way that the scrapers project more or less beyond the bottom 4 or that they lie outside the range of the supporting bottom 4.

Instead of using the crossing arms I6 connected with the scrapers it is possible also to provide, as shown in Figs. 5 and 6, interlocking tooth segments I6 firmly coupled with the scrapers as by being mounted on pivot I4, said segments being suitably combined with the actuating rod IT, as by teeth I5 on pintle I9. The position i of the scrapers I2 in the one direction or of the scrapers I3 in the other direction and the quantity of coal to be discharged by them may be adjusted in such a manner that the quantity of coal discharged remains unaltered at every forward and backward movement of the scrapers. This may for instance be effected by the adjustable nuts or the like provided on the actuating rod I'I.

Slewable levers 2| are arranged in bearings 22a on the hopper 3 of the charging lorry 3a. These levers 2| are of such a length that they reach in vertical position the range of both the ends of the actuating rod I'I. Slewable levers 22 are likewise provided at the rear side of the charging car hopper 3. The ends of these levers 22 are fitted with guide rollers 23. The levers 22 lying in bearings 24 are firmly connected with the levers 2| by the shaft 25, i. e. the levers 2| and 22 are not slewable relative to each other.

For simplicity only one charging hop- In addition the levers 26 are likewise firmly attached to the shaft 25. One shaft 25 together with one pair of levers 26 is provided for each lever 2I (see Fig. 4). The levers 26 at front and rear are also interconnected by the rods 21. The levers 22 are arranged in such a manner that the guide rollers 23 when the charging car travels underneath the coal bunker I touch the rails 8. These levers 22 are of such a length that when moving the charging car underneath the storage bunker I, the lever 22 turns from the vertical position at a certain angle. The levers 2| bolted to the shaft 25 are inclined relative to the levers 22 corresponding to said angle.

Before driving the charging car 3a underneath the bunker I, the levers 2|, 22 take up the position as illustrated in Fig. 3. At this moment the levers 22 stand vertically while the levers 2| are inclined. The rails 8 at the entrance end of the coal charging car 3a are bent upwards like a curve. When the charging car So travels underneath the storage bunker I, the guide rollers 23 of the levers 22 meet the bent rail ends and are thereby turned in an anticlockwise direction. By this movement of the levers 22 the two levers 2| are also slewed accordingly.

The arrangement is such that when turning the levers 2| their ends come within the range of the actuating rod so that same is finally kept between the two levers 2|. Therefore on further driving the charging car underneath the bunker, the actuating rod I1 is pushed forwards relatively to the bogie It by means of the back one of the levers 2| until the rod I'I reaches its final position due to the position of the adjusting screws 20. In this position, the adjusting screws 2|] fit against the transverse yoke I8 of the bogie I0 and thereafter the bogie I0 and simultaneously the scrapers I2 are moved along the supporting bottom 4. During this movement the scrapers I2 are stripping the coal oil the supposrting bottoms 2 over their rim into the hoppers The travelling direction of the charging car So is changed at the end of the discharge slot. On the now following backward movement of the charging car, the rod I! is actuated by the other lever 2| and moves relatively to the bogie longitudinally until the scrapers I3 lie over the bottoms 4 whilst the scrapers I2 are out of action. As soon as the rod II has reached the corresponding other final position, the bogie I0 is taken along with the charging car 3a up to the other end of the bunker slot and a further quantity of coal is stripped off the supporting bottoms into the car hoppers 3.

As may be seen from the above description, the scrapers I2 and I3 com into action as soon as the charging car 3a moves underneath the coal bunker or the like. In one travelling direction of the charging car the scrapers I2 are in operation and in the other travelling direction the scrapers I3 come into operation.

At each movement of the charging car, the scrapers discharge a portion of the coal which lies upon the supporting bottoms 4 over the rim of same from where it falls through the slot-like opening '5 into the hopper of the charging car.

Simultaneously fresh coal slides from the storage bunker onto the supporting bottoms 4 so that the bottoms 4 are constantly completely covered with coal and the scrapers I2, I3 can always grip the coal placed on the supporting bottoms.

The charging car 3a is moved forwards d backwards underneath the bunker until sumcient coal is conveyed by means of the scrapers I2 and I3 into the car hopper 3. By manipulating the adjusting screws it is possible to control exactly the quantity of coal to be scraped off by the scrapers l2 and 13 over the supporting bottoms 4 of the bunker and how much coal is moved at every reciprocation of the charging car by means of the scrapers into the car hoppers. The contrivance is preferably adjusted in such a manner that a single movement of the charging car in forward and backward direction is sufficient in order to fill the hoppers of the charging car. According to my invention the coal falls into the hoppers of the charging car in a thin stream producing a loosely composed charge and furthermore the coal is discharged uniformly over the whole width of the coal service bunker.

The levers 2| and the guide levers 22 are fixed to the shaft 25 in such a way that the levers 2| will come out of engagement with the actuating rod ll as soon as the guide levers 22 are turned in a clockwise direction (as the case may be) when the charging car is driven back from the coal bunker. The guide rollers 23 of the levers 22 will then come within the range of the upwardly bent end of the guide rails 8 and will thereby be moved into the vertical position as shown in Fig. 2 on the left side. from the figure, the actuating rod I1 is now free of the levers 2| and consequently the coupling between the bogie H) and the charging car 3a is released.

In order to be able to separate easily the car hopper 3 from the scraper device in case of troubles the guide levers may be provided at their bearing points with suitable locking means which allow an easy loosening. This may for instance be efiected by a pivot pin 8!! which passes through i the bearing of the lever 2| lying at the entrance side so that the charging car may be driven away underneath the bunker without taking along the scraping device.

Instead of using a bunker with slots on both sides for discharging the coal as exemplified on the accompanying drawings, a slot bunker discharging only from one side may be employed for carrying out my present invention.

I have now above described my present invention on the lines of a preferred embodiment thereof, but my invention is not limited in all its aspects to the mode of carrying it out as described and shown, since the invention may be variously embodied within the scope of the following claims.

I claim:

1. Apparatus for filling the charging lorries for coke ovens comprising: a coal storage bunker arranged above a trackway for the charging lorry for travel of the lorry underneath the bunker; a slot extending the length of the lower part of the bunker, and a horizontal coal supporting wall beneath the slot for scraping coal through As may be seen I the slot on" the wall, the rim of the horizontal wall being situated within the range of the lorry hopper; a bogie arranged for movement on a track therefor beneath the rim of the horizontal wall; a scraper carried by the bogie and adapted to extend through the slot over the upper surface of the horizontal wall for scraping coal over the rim into the lorry hopper on movement of the bogie; pusher means on the lorry movable into and out of pushing relationship with the bogie; operating means on the lorry cooperating with the pusher means for moving the same into pushing relation with the bogie; and guide means associated with the storage bunker adjacent the horizontal wall for cooperation with the operating means to manipulate the same to operate the pusher means; said guide means being so disposed relative to the end of the slot as to manipulate the operating means to operate the pusher means into pushing relationship with the bogie only after the lorry hopper is in full receiving position underneath the bogie scraper.

2. Apparatus as claimed in claim 1, and in which the bogie is provided with adjusting means for adjusting the scraper into and out of scraping relation in the slot, and with manipulative means displaceable relative to the bogie to operate the adjusting means, and in which the manipulative means is disposed to extend between the pusher means and the bogie so as to be first displaced by the pusher means to manipulate the scraper adjusting means and then thereafter be moved in unison with the bogie by the pusher means.

3., Apparatus as claimed in claim 1, and in which the bogie is provided with adjusting means for adjusting the scraper into and out of scraping relation in the slot, and with manipulative means displaceable relative to the bogie to operate the adjusting means, and in which the manipulative means is disposed to extend between the pusher means and the bogie so as to be first displaced by the pusher means to manipulate the scraper adjusting means and then thereafter be moved in unison with the bogie by the pusher means; and in which the scraper comprises two sections, one adapted to discharge coal during forward movement and the other on reverse movement of the bogie by the pusher means on the lorry, which sections are connected together for reverse operation by the adjusting means; and in which the pusher means on the lorry comprises pushing elements for cooperation with the front and rear of the bogie and connected to the operating means for movement in unison, and in which each pusher element first operatively engages a part of the manipulative means at its respective end of the bogie for adjusting the scraper section reversely before moving the bogie for its forward and backward movement by the lorry.

BRUNO WILLEKE. 

